:root {
    --primary-color: #d4af37;
    /* Gold */
    --secondary-color: #9b59b6;
    /* Purple for accent */
    --bg-dark: #121212;
    --bg-card: #1e1e1e;
    --text-main: #ffffff;
    --text-muted: #aaaaaa;
    --gradient-gold: linear-gradient(135deg, #f1c40f 0%, #d4af37 100%);
    --gradient-purple: linear-gradient(135deg, #8e44ad 0%, #9b59b6 100%);
    --font-heading: 'Pretendard', sans-serif;
    /* Assuming available or fallback */
    --font-body: 'Pretendard', sans-serif;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: var(--font-body), -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

body {
    background-color: var(--bg-dark);
    color: var(--text-main);
    line-height: 1.6;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(18, 18, 18, 0.9);
    backdrop-filter: blur(10px);
    z-index: 1000;
    padding: 15px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
}

.logo .highlight {
    color: var(--primary-color);
}

.nav {
    display: flex;
    gap: 20px;
    align-items: center;
}

.nav a {
    font-size: 1rem;
    color: var(--text-muted);
    transition: color 0.3s;
}

.nav a:hover,
.nav a.active {
    color: var(--primary-color);
}

.nav .cta-btn {
    background: var(--gradient-gold);
    color: #000;
    padding: 8px 20px;
    border-radius: 20px;
    font-weight: 600;
    transition: transform 0.2s;
}

.nav .cta-btn:hover {
    transform: scale(1.05);
}

/* Hero Section */
.hero {
    position: relative;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding-top: 60px;
    /* Improved Background Image */
    /* Improved Background Image */
    background: linear-gradient(rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0.8)), url('https://images.unsplash.com/photo-1572116469696-31de0f17cc34?auto=format&fit=crop&q=80');
    background-size: cover;
    background-position: center;
    /* Removed fixed attachment for performance */
    will-change: transform;
}

.hero-content {
    z-index: 2;
    animation: fadeInUp 1s ease-out;
    will-change: transform, opacity;
}

.hero h2 {
    font-size: 3rem;
    margin-bottom: 20px;
    line-height: 1.2;
}

.hero .gradient-text {
    background: var(--gradient-gold);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    font-weight: 800;
}

.hero p {
    font-size: 1.2rem;
    color: var(--text-muted);
    margin-bottom: 40px;
}

.hero-buttons {
    display: flex;
    gap: 15px;
    justify-content: center;
}

.btn {
    padding: 15px 30px;
    border-radius: 30px;
    font-weight: 700;
    font-size: 1.1rem;
    cursor: pointer;
    transition: all 0.3s;
}

.primary-btn {
    background: #fae100;
    /* Kakao Yellowish */
    color: #3B1E1E;
}

.secondary-btn {
    background: transparent;
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
}

.btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
}

/* Categories Section */
.categories {
    padding: 100px 0;
    background: #181818;
}

.categories h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 10px;
    color: var(--text-main);
}

.categories .subtitle {
    text-align: center;
    color: var(--text-muted);
    margin-bottom: 50px;
}

.category-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.category-card {
    background: #252525;
    border-radius: 15px;
    overflow: hidden;
    transition: transform 0.3s;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.category-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.3);
    border-color: var(--primary-color);
}

.category-card .img-wrapper {
    width: 100%;
    height: 200px;
    overflow: hidden;
}

.category-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s;
}

.category-card:hover img {
    transform: scale(1.1);
}

.category-card .card-content {
    padding: 25px;
}

.category-card h3 {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.category-card p {
    color: var(--text-muted);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* Features */
.features {
    padding: 80px 0;
    background: var(--bg-card);
}

.features .container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.feature-card {
    background: rgba(255, 255, 255, 0.05);
    padding: 30px;
    border-radius: 15px;
    text-align: center;
    transition: transform 0.3s;
}

.feature-card:hover {
    transform: translateY(-10px);
    background: rgba(255, 255, 255, 0.08);
}

.feature-card .icon {
    font-size: 3rem;
    margin-bottom: 20px;
}

.feature-card h3 {
    margin-bottom: 15px;
    color: var(--primary-color);
}

/* Benefits Section */
.benefits {
    padding: 80px 0;
}

.content-wrapper {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.benefits h2 {
    font-size: 2.5rem;
    margin-bottom: 10px;
}

.benefit-list {
    list-style: none;
    margin-top: 40px;
    text-align: left;
    display: grid;
    gap: 20px;
}

.benefit-list li {
    font-size: 1.2rem;
    padding: 20px;
    border: 1px solid rgba(212, 175, 55, 0.3);
    border-radius: 10px;
    background: rgba(0, 0, 0, 0.2);
}

.benefit-list li strong {
    color: var(--primary-color);
    margin-right: 10px;
}

/* Salary Section */
.salary {
    padding: 80px 0;
    background: linear-gradient(rgba(0, 0, 0, 0.8), rgba(0, 0, 0, 0.8)), url('https://images.unsplash.com/photo-1566737236500-c8ac43014a67?auto=format&fit=crop&q=80');
    /* Sample luxury background */
    background-size: cover;
    background-position: center;
    text-align: center;
}

.salary h2 {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 30px;
}

.salary-box {
    display: flex;
    justify-content: center;
    gap: 40px;
    margin: 40px 0;
    flex-wrap: wrap;
}

.salary-item {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(5px);
    padding: 40px;
    border-radius: 20px;
    border: 1px solid var(--primary-color);
    min-width: 250px;
}

.salary-item .label {
    display: block;
    font-size: 1.2rem;
    margin-bottom: 10px;
}

.salary-item .value {
    font-size: 2.5rem;
    font-weight: 800;
    color: #fff;
}

.salary-item .value span {
    font-size: 1rem;
    font-weight: normal;
}

/* FAQ */
.faq {
    padding: 80px 0;
}

.faq h2 {
    text-align: center;
    margin-bottom: 50px;
}

.faq-item {
    max-width: 800px;
    margin: 0 auto 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

details summary {
    padding: 20px;
    cursor: pointer;
    font-size: 1.2rem;
    font-weight: 600;
    list-style: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

details summary::after {
    content: '+';
    font-size: 1.5rem;
    color: var(--primary-color);
}

details[open] summary::after {
    content: '-';
}

details p {
    padding: 0 20px 20px;
    color: var(--text-muted);
}

/* Contact */
.contact {
    padding: 80px 0;
    text-align: center;
    background: #1a1a1a;
}



.contact-info {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin-top: 30px;
    flex-wrap: wrap;
}

.contact-card {
    background: #252525;
    padding: 40px;
    border-radius: 20px;
    width: 300px;
}

.contact-card h3 {
    margin-bottom: 15px;
    color: var(--primary-color);
}

.contact-card .phone,
.contact-card .kakao-id {
    font-size: 1.5rem;
    margin-bottom: 25px;
    font-weight: 700;
}

/* Footer */
footer {
    padding: 30px 0;
    text-align: center;
    color: var(--text-muted);
    background: #000;
    font-size: 0.9rem;
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .hero h2 {
        font-size: 2rem;
    }

    .nav {
        display: none;
        /* Simplification for this MVP */
    }

    .logo {
        margin: 0 auto;
    }

    .hero-buttons {
        flex-direction: column;
        padding: 0 20px;
    }

    .salary-box {
        flex-direction: column;
        align-items: center;
    }
}

/* Philosophy Section */
.philosophy {
    padding: 80px 0;
    background: linear-gradient(rgba(0, 0, 0, 0.9), rgba(0, 0, 0, 0.9)), url('https://images.unsplash.com/photo-1497366216548-37526070297c?auto=format&fit=crop&q=80');
    background-size: cover;
    background-position: center;
    text-align: center;
}

.philosophy h2 {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 40px;
}

.message-box {
    max-width: 800px;
    margin: 0 auto;
    background: rgba(255, 255, 255, 0.05);
    padding: 40px;
    border-radius: 20px;
    border: 1px solid rgba(212, 175, 55, 0.2);
    backdrop-filter: blur(10px);
}

.message-box p {
    font-size: 1.1rem;
    color: #ddd;
    margin-bottom: 20px;
    line-height: 1.8;
}

.message-box strong {
    color: var(--primary-color);
    font-weight: 700;
}

.message-box .highlight-para {
    font-size: 1.25rem;
    color: #fff;
    margin-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 30px;
}

/* Animation */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}